Also added were new models of both the Time Capsule and AirPort Extreme base station, now supporting goodies like a second SSID for guests (that's firewalled off from the main network), and dual-band operation. Cool. I wonder if any of those features will make it via software to the current model (like maybe the guest network support).
They also added a trick for remote access to a Time Capsule via .Mac that looks interesting.
Now for the other shoe. A lot of whispers have been going on the last few days that Apple's planning an event for 3/24. Well, if that's true then there's something else coming out that's basically not a Mac. Because the entire line is now refreshed since October when the initial unibody laptops came out (the 17" and nVidia whitebook were in January, now everything else consumer today). Xserve wasn't updated today, but that's not a big deal. No pressing reason to move it over from Harpertown to Nehalem right now anyways - and that alone doesn't justify an Apple event.
My guesses: either an announcement that Snow Leopard has gone GM (with a release date 30-45 days later) or something iPhone-related. Either which way, if there is in fact an Apple event this'll likely be the last major thing from them before WWDC midyear.